What is the purpose of using a toner in hair coloring?

The purpose of using a toner in hair coloring is to adjust the tone of the hair color. Toners are typically applied after the hair has been lightened or colored, and their primary function is to neutralize unwanted undertones that can result from the bleaching process. For example, if hair appears overly yellow or brassy after bleaching, a toner can help achieve a cooler, more desirable shade by adding specific pigments.

Toners come in a variety of shades that can enhance or modify the existing color, creating a more balanced and refined appearance. This is crucial in color treatments since the final result depends not only on the base color but also on how well the toning aligns with the desired overall look. Therefore, toners are a vital tool in achieving the precise color and tone that clients often want after a coloring service.